My sister likes to send pics of her kids to our family in one group text. Problem is, I then receive 10 different texts from each person commenting on the picture. It drives me NUTS! How do I stop them from coming to me? Is there an "opt out" button? (and no, I'm not going to ask her to send them to me separately. That would be rude. I just want to do it discreetly) Thanks in advance.